AP BIOLOGY

Detailed explanation-1: -The anther contains pollen sacs which produce pollen grains. The pollen grain is the male gametophyte which contains the male gametes. The pollen grain is surrounded by two layers as exine which forms the outer layer and intine which forms the inner layer. The generative cell divides to form the two male gametes.

Detailed explanation-2: -In flowering plants, male and female gametes are produced in the anther and ovule, respectively. Male gametes are contained within pollen grains, which are released from the anthers at anthesis.

Detailed explanation-3: -Anthers contain structures called pollen grains. Pollen grains are male gametophyte which produces male gametes.

Detailed explanation-4: -Stamens produce male gametes in a flower. It has two parts filament and anther.

Detailed explanation-5: -Anther shapes are variously described by terms such as linear, rounded, sagittate, sinuous, or reniform.